Namibia is trying to save its lions by charging trophy fees to kill them.

And eventually, they might be able to intervene.

The popular gene-editing technique can deliver a step-by-step account of how a single-cell embryo becomes a trillion-cell animal.

An ankylosaur fossil with fish in its belly provides ancient evidence that herbivore diets are more flexible than they’re assumed to be.

Even before they grew strong legs, their eyes surged in size.

Scientists don’t know when bunnies became docile—and they're not even sure if that's an answerable question.

An incredibly preserved set of tracks tell the story of an ancient hunt.